06/05/2014 07:18 EDT | Updated 06/16/2017 01:02 EDT

Seattle Pacific University Shooting Leaves Several Wounded

Four people were shot on the campus of Seattle Pacific University on Thursday, according to authorities.

A lone gunman armed with a shotgun and knife opened fire Thursday in a building at a small Seattle university, fatally wounding one person before a student subdued him with pepper spray as he tried to reload, police said.

A student building monitor at Seattle Pacific University disarmed the gunman after he entered the foyer at Otto Miller Hall, and several other people jumped on top of him and pinned him down until police officers arrived, police said.

A 19-year-old man died at Harborview Medical Center. Three other people were also taken to the hospital. A critically wounded 20-year-old woman was in intensive care late Thursday night after about five hours in surgery, hospital spokeswoman Susan Gregg said. A 24-year-old man was hospitalized in satisfactory condition. A Seattle Fire Department official said the man suffered "pellet type wounds" to his neck and chest.

A 22-year-old man was treated and released, Gregg said. Police said he suffered minor injuries during the struggle with the suspect.

None of the victims was immediately identified.

Aaron R. Ybarra, 26, was booked into the King County Jail late Thursday for investigation of murder, police said.

At an earlier news conference, Assistant Police Chief Paul McDonagh said the man in custody was not a student at the school.

The university posted this update to its website on Thursday:

The campus is in lockdown due to a shooting in Otto Miller Hall. Check your text messages for emergency information. The SPU home page and @SPUnews on Twitter will be updated as information becomes available.

About 4,270 undergraduate and graduate students attend the private Christian university. Its 40-acre campus is in a leafy residential neighborhood about 10 minutes from downtown Seattle. The school canceled classes and other activities Friday.

With files from the Associated Press